ATmega169P Atmel Corporation, ATmega169P Datasheet - Page 35

• Manufacturer Part Number: ATmega169P
• Manufacturer: Atmel Corporation

Specifications of ATmega169P

• Flash (kbytes): 16 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 17
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Segment Lcd: 100
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8018P–AVR–08/10
Table 8-8.
The capacitance (Ce + Ci) needed at each TOSC pin can be calculated by using:
where
Ce - is optional external capacitors as described in
Ci - is is the pin capacitance in
CL - is the load capacitance for a 32.768 kHz crystal specified by the crystal vendor.
C
Crystals specifying load capacitance (CL) higher than the ones given in the
external capacitors applied as described in
The Low-frequency Crystal Oscillator must be selected by setting the CKSEL Fuses to “0110” or
“0111” as shown in
Table
Table 8-9.
Table 8-10.
Note:
CKSEL3..0
S
SUT1..0
- is the total stray capacitance for one TOSC pin.
0110
0111
00
01
10
11
ATmega169P
8-9.
(1)
1. This option should only be used if frequency stability at start-up is not important for the
Device
application
Capacitance for Low-Frequency Crystal Oscillator
Start-up Times for the Low-frequency Crystal Oscillator Clock Selection
Start-up Times for the Low-frequency Crystal Oscillator Clock Selection
Additional Delay from Reset (V
Table
Power-down and Power-save
Start-up Time from
8-10. Start-up times are determined by the SUT Fuses as shown in
14 CK + 65 ms
32 kHz Osc. Type
14 CK + 4 ms
System Osc.
32K CK
Timer Osc.
Table
1K CK
14 CK
8-8.
Ce
+
Ci
Figure 8-2 on page
CC
=
= 5.0V)
2 CL
⋅
Reserved
Figure 8-2 on page
Cap (Xtal1/Tosc1)
–
C
s
Recommended Usage
Fast rising power or BOD enabled
Slowly rising power
Stable frequency at start-up
Recommended Usage
Stable frequency at start-up
16 pF
16 pF
33.
ATmega169P
33.
Cap (Xtal2/Tosc2)
Table
6 pF
6 pF
8-8, require
35